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基于氧气底吹工艺特性和最小吉布斯自由能原理,构建了氧气底吹铜熔炼热力学计算模型。模拟结果表明:在给定的稳定生产条件下,铜锍中Cu、Fe和S含量分别是71.08%、7.15%和17.51%,渣中Fe、SiO_2和Cu含量分别是42.17%、25.05%和3.16%。微量元素在底吹熔炼过程中气相、渣相和铜锍相三相间的模拟分配比例为:砷82.69%、11.22%和6.09%;锑16.57%、70.63%和12.80%;铋68.93%、11.30%和19.77%;铅19.70%、24.75%和55.55%;锌17.94%、64.28%和17.79%。将模拟结果和实际生产数据进行验证,结果一致,表明了该多相平衡热力学计算模型具有可靠性,可以指导氧气底吹铜熔炼生产实践,优化工艺操作参数。
Based on the oxygen bottom blowing process characteristics and minimum Gibbs free energy principle, a thermodynamic calculation model of oxygen copper blowing at the bottom was constructed. The simulation results show that the contents of Cu, Fe and S in copper matte are 71.08%, 7.15% and 17.51%, respectively, and the contents of Fe, SiO_2 and Cu in the slag are 42.17%, 25.05% and 3.16, respectively, under the given stable production conditions %. In the bottom blowing smelting process, the simulated distribution ratios of gas phase, slag phase and copper matte phase are as follows: arsenic 82.69%, 11.22% and 6.09%; antimony 16.57%, 70.63% and 12.80%; bismuth 68.93% and 11.30% And 19.77% respectively; lead 19.70%, 24.75% and 55.55%; zinc 17.94%, 64.28% and 17.79%. The simulation results and the actual production data are verified, the results are consistent, indicating that the multiphase equilibrium thermodynamic calculation model is reliable, can guide the practice of oxygen copper blowing at the bottom of the production process, optimize the operating parameters of the process.